Huawei DDSU666-H single-phase 100A smart meter

Smart Meter Huawei DDSU666-H single-phase 100A

The Huawei DDSU666-H single-phase 100A Smart Meter is the intelligent energy meter specially designed for single-phase residential photovoltaic installations. With its class 1 measurement and native compatibility with Huawei SUN2000 hybrid inverters, this meter offers precise monitoring and automatic optimisation of your solar self-consumption.

The perfect solution for single-phase residential use

Unlike the DTSU666-H three-phase model, the DDSU666-H has been specifically developed for single-phase installations, which account for the majority of homes in Belgium and Europe:

• Detached houses: detached houses, villas, cottages with solar installation
• Separately metered flats: condominiums with individual solar panels
• Small businesses: Boutiques, professional practices, workshops with single-phase solar panels
• Second homes: Chalets, holiday homes with energy autonomy

Capable of measuring up to 100 amps in single-phase, the DDSU666-H is perfectly suited to residential photovoltaic installations from 3 to 10 kWp, covering the vast majority of domestic needs.

Intelligent optimisation with Huawei SUN2000 inverters

The DDSU666-H Smart Meter is essential for fully exploiting the capabilities of Huawei single-phase hybrid inverters:

Maximised self-consumption: the meter measures your solar production and domestic consumption in real time. The inverter automatically adjusts energy flows to encourage local use of your green electricity.

Optimum battery management: Coupled with Huawei Luna 2000 batteries, the Smart Meter enables intelligent storage based on your consumption habits, weather forecasts and your supplier's day/night tariffs.

Compliant injection limits: For installations subject to network injection limits (e.g. 3 kW), the meter ensures precise dynamic regulation without loss of production.

Easy to use every day

True to Huawei's philosophy, the DDSU666-H combines technical performance with ease of use:

• Backlit LCD screen: instant display of voltage, current, power and energy consumed/produced
• Quick configuration: Set parameters via the screen or directly from the Huawei FusionSolar mobile application
• DIN rail installation: Standard installation in your domestic electrical panel in just a few minutes
• RS485 communication: Direct connection to your Huawei inverter via 2-wire cable (Modbus RTU protocol)

Energy-saving and eco-friendly design

With a total power consumption of just 1 watt, the Smart Meter DDSU666-H is one of the most energy-efficient meters in its class:

• Annual energy cost: less than €0.25 per year (based on €0.30/kWh)
• Continuous operation 24 hours a day with no impact on your bill
• No external power source required (powered by the meter)
• Exceptional longevity (over 15 years in normal use)

Main technical characteristics

Recommended applications and configurations

Installation with single-phase hybrid inverter: The DDSU666-H is essential for all Huawei single-phase installations with Luna 2000 battery storage. It ensures perfect coordination between solar panels, batteries, domestic consumption and the electricity grid.

Real-time monitoring via FusionSolar: Connected to the Huawei ecosystem, the meter transmits all its data to the FusionSolar mobile application. You can monitor your production, consumption, self-consumption rates and savings from your smartphone, wherever you are.

Belgian and European regulatory compliance: The DDSU666-H complies with all the current standards for energy meters and can be installed in accordance with the requirements of Belgian distribution network operators.

Why choose the DDSU666-H single-phase model?

If your domestic electrical installation is 230V single-phase (the standard configuration in most homes), the DDSU666-H is the optimal choice:

• Optimum accuracy for single-phase measurement (vs. oversized three-phase)
• Simplified wiring: only Phase + Neutral (no 3 phases)
• Price optimised for standard residential use
• Perfect compatibility with Huawei SUN2000-3/4/4.6/5KTL-L1 single-phase inverters

Why choose Wattuneed?

Wattuneed is an authorised Huawei FusionSolar distributor in Belgium. We offer the full range of Huawei inverters, meters and batteries, with permanent stock, French-speaking technical support and personalised assistance for your residential solar projects. Our team will help you choose the right Smart Meter for your type of electrical connection (single or three-phase).